The pH measurement indicates the pH level in your pool or spa. Variations in pH readings can be normal: they can fluctuate depending on the weather or swimming. ICO can detect changes between two consecutive measurements. On this page, we explain the possible causes of variations in pH readings.
![Image du graphique représentant le pH](https://ondilo.com/wp-content/uploads/2024/06/ico-graphic-diagram-ph-en.webp)
View pH measurement trends
On your ICO application, you can find pH trends by clicking on the trend icon.
![Image du bouton tendance](https://ondilo.com/wp-content/uploads/2024/06/ico-image-button-trends-en.webp)
If action is required on your part, ICO will send you a recommendation.
Possible pH measurement anomalies
- Your pH measurement peaks at around 8: we recommend that you measure the alkalinity of your pool or spa. A high TAC will cause the pH value to stabilise at a high level.
- Your pH measurement fluctuates: we advise you to measure the alkalinity of your pool or SPA. A low TAC will cause the pH measurement to become unstable.
- Your pH sensor may no longer be calibrated we invite you to carry out a mineral water test. You can find the procedure by clicking here. hereand then contact our helpdesk
- You think your pH measurement is wrong : we invite you to carry out a mineral water test. You can find out how by clicking here then contact our helpdesk